CN1115998A - Scroll compressor - Google Patents

Scroll compressor Download PDF

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Publication number
CN1115998A
CN1115998A CN94190844A CN94190844A CN1115998A CN 1115998 A CN1115998 A CN 1115998A CN 94190844 A CN94190844 A CN 94190844A CN 94190844 A CN94190844 A CN 94190844A CN 1115998 A CN1115998 A CN 1115998A
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CN
China
Prior art keywords
scroll
framework
fixed scroll
pressure
shake
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Granted
Application number
CN94190844A
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Chinese (zh)
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CN1042969C (en
Inventor
小川博史
佐野文昭
角田昌之
池田清春
茂木周二
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Publication of CN1115998A publication Critical patent/CN1115998A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/005—Axial sealings for working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

A scroll compressor in which an axial compliance equal to that ina conventional scroll compressor is realized during a steady running, i.e., the tips and roots of plate-like spiral teeth are allowed to slide with a slight contacting force always maintained therebetween and in which two scrolls, a sliding scroll and a stationary scroll, are separated from each other in the axial direction when the compressor is stopped, the sliding scroll is gradually moved together with a frame towards the stationary scroll so as to reduce a distance therebetween while maintaining a steady posture after started, and it is further moved to a steady running state, thereby making it possible to provide high performance, low noise and high reliability.

Description

Scroll compressor
Technical field
The present invention relates to be applied to air conditioner, refrigerating machine etc. fixed scroll and the tabular scrollwork tooth separately that shakes scroll are intermeshed to form the scroll compressor of pressing chamber.
Background technique
The scroll compressor in past for example has and opens this scroll compressor shown in the clear 63-80088 communique the spy.Fig. 7 is that the scroll compressor that illustrates is in the past stopping and the sectional view of the major component of situation during steady running; Fig. 8 and Fig. 9 are the ideographs that is used to illustrate the action of scroll compressor shown in Figure 7.
In Fig. 7, the 1st, fixed scroll, the center portion of its base plate 1a is formed with exhaust port 1e, and is formed with tabular scrollwork tooth 1b on base plate 1a one-sided (downside among Fig. 7).In addition, on a plurality of positions at interval of the outer circumferential side of fixed scroll 1, be formed with in order to determine its with respect to framework 3 radially and the fraising 1c of the position of sense of rotation.The 2nd, shake scroll, be formed with tabular scrollwork tooth 2b on its base plate 2a one-sided (upside among Fig. 7) with the same in fact shape of tabular scrollwork tooth 1b of fixed scroll 1, and the center portion at the opposite side (downside in Fig. 7) opposite with tabular scrollwork tooth 2b of base plate 2a is formed with hollow cylindrical boss part 2f, and its inner side surface forms and shakes bearing 2c.In addition, shaking on scroll 2 and outer circumferential side boss part 2f the same side, be formed with the thrust surface 2d that the thrust-bearing 3a of framework 3 relatively carries out planar slide.
In addition, be formed with cross-head guide ditch 2e on two positions of subtend of the outer circumferential side of the base plate 2a that shakes scroll 2, the dewclaw 9a of cross headring 9 can be engaged in this cross-head guide ditch 2e with radially being free to slide.On the other hand, on framework 3, also be formed with the cross-head guide ditch 3b of subtend, they and the above-mentioned cross-head guide ditch 2e that shakes scroll 2 have about 90 ° phase difference, and the lower claw 9b of cross headring 9 can radially be engaged in this cross-head guide ditch 3b from axle slidably.In addition, be formed with the 1st bearing 3c that radially supports by electric motor driven main shaft 4 on the central part of framework 3, and the peripheral part electricity consumption acnode solid welding of framework 3 is bearing in surely on the seal container 10.And the outer circumferential side of framework 3 be formed be used for determining its with respect to fixed scroll 1 radially and the fraising 3d of the position of sense of rotation and phase place, after passing the fraising 1c of fixed scroll 1 as the hinge pin (reamer pin) 6 of connecting body, its tip portion anchors in the fraising 3d of framework 3.
On the end of shaking scroll one side (upside among Fig. 7) of main shaft 4, be formed with the 4a of pin portion, the 4a of this pin portion has and the unidirectional planar surface portion of eccentric direction of shaking scroll 2.The slider 5 that has planar surface portion on its inner side surface is engaged on the 4a of this pin portion.The outer side surface of slider 5 is cylindric, this slider 5 with shake shaking bearing 2c and can matching with rotating freely of scroll 2.Label 7 is high low pressure dividers, and its peripheral part and seal container 10 solidatings weld together, and perimembranous is by the peripheral part tabling of Sealing 8 with the 1d of cannular boss portion of the opposite side (upside among Fig. 7) of the tabular scrollwork tooth 1b that is formed on fixed scroll 1 in it.
10a is that 10b is the discharge tube that the pressurized gas after the compression are discharged outside seal container 10 with the suction pipe in the importing of the low-pressure gas before the compression seal container 10.
Below, the action of scroll compressor when steady running in past is described with Fig. 7.The driving torque that is produced by motor passes to slider 5 by main shaft 4.The driving torque that is delivered to slider 5 shakes scroll 2 by shaking bearing 2c driving.At this moment, because the effect of cross headring 9, shake the rotation of scroll 2 relative frameworks 3, the rotation of relative fixed scroll 1 all is restricted even, shake scroll 2 and carry out swing movement with regard to relative fixed scroll 1.Then, the low pressure refrigerant gas that is sucked by suction pipe 10a leads to the low-voltage space 10c in the seal container 10, enter then by the tabular scrollwork tooth 1b of fixed scroll 1 and the tabular scrollwork tooth 2b that shakes scroll 2 and be meshed and in the pressing chamber of a pair of 3 months shapes forming, be compressed along with the minimizing of the volume similar to the pressing chamber of this 3 months shapes.In addition, compressed high pressure refrigerant gas leads to high-pressure space 10d in the seal container 10 from the exhaust port 1e of fixed scroll 1, is discharged outside the seal container 10 by discharge tube 10b thereafter.
But to slider 5 transmission of drive force parts, promptly the planar surface portion of the 4a of pin portion of main shaft 4 and the planar surface portion on slider 5 inner side surfaces are free to slide along straight line on the eccentric direction that shakes scroll 2 by main shaft 4.This means, the revolution radius of the 4a of pin portion in the slider 5 is variable, the radius that shakes of the scroll of sliding even 2 is variable, can not interfere strongly and can not produce yet at the fixed scroll 1 and the scrollwork flank of slip scroll 2 under the situation in big gap and realize compressed action, promptly become the prerequisite of the compliance of radial direction.
Below the characteristic on the axial direction of fixed scroll 1 is described.Fig. 8 illustrates scroll compressor in the past when steady running, acts on the situation of the pressure of the cold media air vertically on the fixed scroll 1.
In Fig. 8, F FDWhat expression acted on cold media air pressure on the back side (upside among Fig. 8) of base plate 1a of fixed scroll 1 makes a concerted effort this power F FDWork as the active force of fixed scroll 1 being pressed to vertically downside.Modern explanation F FDContent: the periphery with the 1d of cannular boss portion that is plugged with Sealing 8 is the boundary, is acting on discharge gas pressure P therein on the heart side d, on its outer circumferential side, acting on gas inhalating pressure P s, then with these pressure (P d, P s) multiply by its active area (S separately respectively F1, S F-S F1), both being added up is exactly power F again FD
On the other hand, F FVBe act on cold media air pressure on the tabular scrollwork flank (downside among Fig. 8) of base plate 1a of fixed scroll 1 make a concerted effort this power F FVWork as the power that fixed scroll 1 is pushed away on axial upside.Modern explanation F FVContent: outer circumferential side from the center side direction, acting on discharge gas pressure P respectively d, the intermediate pressure P in the compression process mAnd gas inhalating pressure P s, with these pressure (P d, P m, P s) multiply by its active area (S separately respectively 1, S 2, S F-S 1-S 2) again they are all added up, be exactly power F FV
But when running well, fixed scroll 1 must push and shake scroll 2.In other words must make F FD＞F FVIf exist and become F in certain interval in turning around of revolving of shaking scroll 2 FD＜F FVThe interval, in this interval, fixed scroll 1 has been left from shaking scroll 2, at this moment, the leakage-gap between at the bottom of the scrollwork tooth top of pressing chamber and the scrollwork tooth becomes very big, makes compressed action untenable.
On the other hand, if F FDWith F FVCompare greater than essential value when above, slide with big pushing force at the bottom of not only making tooth top and tooth, also increased at the load that shakes on the thrust surface 2d of scroll 2, therefore necessarily demonstrate this phenomenon that the input to main shaft is increased, moreover, also worry can develop into the most bad states of affairs such as burn at the bottom of tooth top, the tooth.
Therefore, the general method that adopts is, the outside dimension of the 1d of cannular boss portion by adjusting the fixed scroll back side makes the discharge gas pressure P at the fixed scroll back side dThe active area optimization.
In addition, as the optimized means of this fixed scroll backside pressure, also can adopt and press the method in space to be used as general means on the fixed scroll back side, being provided with.
The scroll compressor in past is though can realize axial compliance, existing problems point aspect the characteristic of the fixed scroll 1 in when starting when steady running.
Below, according to Fig. 9 its problem points is described.Fig. 9 is fixed scroll 1 that scroll compressor in the past is shown acts on the situation of the cold media air pressure vertically on this fixed scroll 1 after starting just figure.In Fig. 9, F FDBe on the back side (upside among Fig. 9) that acts on the base plate 1a of fixed scroll 1 cold media air pressure make a concerted effort this power F FDAs the power of fixed scroll 1 to axial downside pushing is worked.After starting just, do not rise as yet owing to discharge gas pressure, when considering simply, can take it is the P that equates with gas inhalating pressure as s(P d≈ P s).So, F FDBe with pressure (P s) multiply by the gross area (S at the back side F) resulting power.
On the other hand, F FVBe act on fixed scroll 1 base plate 1a tabular scrollwork tooth one side (downside among Fig. 9) cold media air pressure make a concerted effort this power F FVWork as the power that fixed scroll 1 is pushed away on axial upside.As previously mentioned, think after starting just, discharge gas pressure and do not rise as yet, modern to F FVDescription of contents it: acting on the discharge gas pressure P that does not boost as yet respectively to the outside from the central part of fixed scroll 1 s, the intermediate pressure P in the compression process mAnd gas inhalating pressure P s, to these pressure (P s, P m, P s) multiply by active area (S separately 1, S 2, S F-S 1-S 2) all add the F that together must exert oneself afterwards FV
Therefore, in the scroll compressor in the past, after starting just, act on the power on the fixed scroll 1, become such as shown in formula (1), the power that fixed scroll 1 is pushed away on axial upside is inevitable bigger, as shown in Figure 9, fixed scroll 1 is left to shake on the scroll 2 and is moved, and meets the stepped part 6a of hinge pin 6 and stops.
F FD＝P s·S F＜P s·S F＋(P m－P s)·S 2＝F FV……(1)
And then after, because the big gap that fixed scroll 1 is left between shaking at the bottom of scroll 2 caused tooth tops and the tooth is released, the result, in compression container 10, the intermediate pressure P in the compression process mBecome pressure state identical when stopping with scroll compressor, fixed scroll 1 and the position relation of shaking scroll 2 also are in state identical when stopping, and promptly fixed scroll 1 turns back to the state that shakes on the scroll that leans against.And then compressed action carries out again after, is in the state shown in Fig. 9 again.Therefore, after the ballistic motion repeated several times up and down of this fixed scroll 1, discharge gas pressure P dOne rises to a certain degree, and just as shown in Figure 8, fixed scroll 1 is got off with the in stable condition of scroll 2 that shake of light last item to downside.
Can understand from top explanation, in the scroll compressor in the past, owing to, have the problem points of sending big noise by compressor in starting back fixed scroll 1 do ballistic motion up and down just.And, in seal container 10, exist when starting under the state of liquid refrigerants, i.e. the intermediate pressure P of cold media air in compression process mWhen presenting maximum, the fraising 1c and the hinge pin 6 of fixed scroll 1 bear very large power diametrically, and fixed scroll 1 is slided with this state, therefore also have the significantly reduced problem of reliability of slip place of fixed scroll 1, hinge pin 6.
The objective of the invention is to solve problem recited above, a kind of scroll compressor is provided, this scroll compressor has when steady running, at the bottom of tooth top and the tooth mutually light press as the high-performance scroll compressor the function of indispensable axial compliance, and noise is low when starting, shakes scroll and can move sleekly.Summary of the invention
The scroll compressor of claim 1, it comprises: seal container; This seal container is divided into the high low pressure divider of hyperbaric chamber and low pressure chamber; Be located at the fixed scroll in the described low pressure chamber and shake scroll, its tabular scrollwork tooth separately is meshing with each other to form pressing chamber each other at it; Support the framework that this shakes scroll and ground free to rotate supporting spindle vertically; Limit described fixed scroll and described framework radially with sense of rotation on the connecting body of relative position; The pressure plate that is located between described high low pressure divider and the described fixed scroll, is meshed with high low pressure divider and fixed scroll respectively; Described fixed scroll is fixedly supported upon in the described seal container, simultaneously, described connecting body runs through described fixed scroll and the same direction of described framework and described pressure plate ground is connected, and described framework can relative vertically described fixed scroll be shifted with described pressure plate.
The scroll compressor of claim 2, it comprises: seal container; Be located at the fixed scroll in this seal container and shake scroll, its tabular scrollwork tooth separately is meshing with each other to form pressing chamber each other at it; Support this vertically and shake the scroll and the framework of supporting spindle radially; Be located at the described tabular scrollwork tooth that shakes scroll an opposite side shake scroll rear support member; The connecting body that shakes on the scroll described in embedding when end and this shook the set of scroll rear support member; The described scroll of shaking is by shaking scroll rear support member and press to described fixed scroll from being formed on the gas pressure in the described pressing chamber that the pressure introduction hole that shakes on the scroll imports, leaving.
The scroll compressor of claim 3, it comprises: seal container; Be located at the fixed scroll in this seal container and shake scroll, its tabular scrollwork tooth separately is meshing with each other to form pressing chamber each other at it; Support this vertically and shake the scroll and the framework of supporting spindle radially; Be located at the support on the seal container of anchoring between this framework and the described seal container; Described framework relies on described support, presses to described fixed scroll side vertically and moves with restricted state diametrically.
The scroll compressor of claim 1 according to the present invention, when steady running, can realize and the same axial compliance of scroll compressor in the past, promptly, often slide at the bottom of the tooth top of tabular scrollwork tooth and the tooth with little contact force, simultaneously, when starting, the state that two scroll when stopping to be left in the axial direction, shake scroll and on one side keep the stable position relation of all-in-one-piece that the distance of itself and fixed scroll is diminished with framework, thus the state when translating into steady running.
The scroll compressor of claim 2 according to the present invention, when steady running, can realize and the same axial compliance of scroll compressor in the past, promptly, often slide at the bottom of the tooth top of tabular scrollwork tooth and the tooth with little contact force, simultaneously, when starting, the state that two scroll when stopping to be left in the axial direction, shake scroll by the gas pressure in the pressing chamber that imports from the pressure introduction hole, while keeping the distance of itself and fixed scroll being diminished with the position relation of shaking scroll rear support component stability, thus the state when translating into steady running.
The scroll compressor of claim 3 according to the present invention, when steady running, can realize and the same axial compliance of scroll compressor in the past, promptly, often slide at the bottom of the tooth top of tabular scrollwork tooth and the tooth with little contact force, simultaneously, when starting, the state that two scroll when stopping to be left in the axial direction, by the gas pressure that imports from the pressure introduction hole of for example support, framework is relying on support, with restricted state diametrically along axially pressing to the fixed scroll side, make and shake scroll and diminish with the distance of framework with fixed scroll, thus the state when translating into steady running.
The simple declaration of drawing
Fig. 1 is the sectional view according to the embodiment's one of scroll compressor of the present invention major component;
Action specification figure when Fig. 2 is scroll compressor steady running among Fig. 1;
Fig. 3 is the action specification book in scroll compressor when starting among Fig. 1;
Fig. 4 is the explanatory drawing about the stability of the framework among Fig. 1;
Fig. 5 is the sectional view according to the embodiment's two of scroll compressor of the present invention major component;
Fig. 6 is the sectional view according to the embodiment's three of scroll compressor of the present invention major component;
Fig. 7 is the sectional view of the major component of scroll compressor in the past;
Action specification figure when Fig. 8 is scroll compressor steady running among Fig. 7;
Fig. 9 is the action specification figure in scroll compressor when starting among Fig. 7.
The best mode embodiment 1 who carries out an invention
Embodiments of the invention one are described below with reference to the accompanying drawings.Fig. 1 is the embodiment's one of the scroll compressor of the present invention sectional view of major component.And the ideograph that Fig. 2 and Fig. 3 are this embodiment's one action specifications to be used.
Fig. 1 is the figure that the state of scroll compressor when steady running is shown, in the figure, the 1st, fixed scroll, on the seal container 10 that the peripheral part electricity consumption acnode solid welding of its base plate 1a, and heart portion is formed with exhaust port 1e therein.In addition, be formed with tabular scrollwork tooth 1b, and be formed with in order to determine its fraising 1c with respect to the position of the radial direction of framework 3 and sense of rotation at the outer circumferential side of fixed scroll 1 at one-sided (downside among Fig. 1) of base plate 1a.The 2nd, shake scroll, one-sided (upside among Fig. 1) of its base plate 2a is formed with the tabular scrollwork tooth 2b with the same in fact shape of tabular scrollwork tooth 1b of fixed scroll 1, and on the central part of the side (downside in Fig. 1) opposite of base plate 2a, be formed with the boss part 2f of hollow cylindrical, be formed with on the inner side surface of this boss part 2f and shake bearing 2c with tabular scrollwork tooth 2b.In addition, with the outer circumferential side that shakes scroll 2 of boss part 2f the same side on, be formed with the thrust surface 2d that the thrust-bearing 3a of framework 3 relatively carries out planar slide.In addition, be formed with cross-head guide ditch 2e respectively on the subtend position of the outer circumferential side of the base plate 2a that shakes scroll 2, the dewclaw 9a of cross headring 9 can be engaged in this cross-head guide ditch 2e with radially being free to slide.On the other hand, on framework 3, also be formed with the cross-head guide ditch 3b of subtend, they and the above-mentioned cross-head guide ditch 2e that shakes scroll 2 have about 90 ° phase difference, and the lower claw 9b of cross headring 9 can be engaged in this cross-head guide ditch 3b with radially being free to slide.In addition, be formed with the 1st bearing 3c that supports diametrically by electric motor driven main shaft 4 on the central part of framework 3, and, the outer circumferential side of framework 3 be formed be used for determining its with respect to fixed scroll 1 radially and the fraising 3d of the position of sense of rotation and phase place, after passing the fraising 1c of fixed scroll 1 as the hinge pin 6 of connecting body, anchor in the fraising 3d of fixed scroll 1.
Dispose pressure plate 11 in a side (upside among Fig. 1) opposite with the tabular scrollwork tooth 1b of fixed scroll 1.Fixed scroll one side of this pressure plate 11, the outer circumferential face tabling of the 1d of cannular boss portion by Sealing A8a and fixed scroll 1; On the other hand, high low pressure divider 7 one sides of this pressure plate 11, chimeric by the inner peripheral surface of Sealing B8b and high low pressure divider 7.In addition, this pressure plate 11, the stepped part 6a by on the end (upper end of Fig. 1) that is formed on the hinge pin 6 that is arranged on its outer circumferential side is connected with hinge pin 6.
In addition, the peripheral part of high low pressure divider 7 and seal container 10 complete cycles are welded on a ground
On the end of shaking scroll one side (upside among Fig. 1) of main shaft 4, be formed with the 4a of pin portion, this pin portion has and the unidirectional planar surface portion of eccentric direction of shaking scroll 2.The slider 5 that has planar surface portion on its inner side surface is engaged on the 4a of this pin portion.In addition, the outer circumferential face of slider 5 is cylindric, and shakes shaking bearing 2c and can matching with rotating freely of scroll 2.10a is with the suction pipe in the low-pressure gas importing seal container 10 before compressing, and 10b is with the discharge tube outside the discharge of the pressurized gas after the compression seal container 10.
Below, the action of this embodiment when steady running is described.The explanation of the compliance that the explanation and the diameter of basic compressed action made progress is identical with example in the past, therefore omits it.
In Fig. 2, to shaking scroll 2 and the characteristic of framework 3 on axial direction describes.In the scroll compressor of present embodiment, be pressed on basically on the framework 3 owing to shake scroll 2, therefore, shaking scroll 2 is identical with framework 3 characteristic in the axial direction, i.e. motion along the vertical direction linkedly.
Fig. 2 illustrates this embodiment's scroll compressor when steady running, the situation of pressure that acts on pressure plate 11 and shake the cold media air vertically of scroll 2.
In Fig. 2, F PDWhat expression acted on cold media air pressure on the face (upside among Fig. 2) of high low pressure divider one side of pressure plate 11 makes a concerted effort this power F PDWork as the active force of pressure plate 11 being pressed to vertically downside.Modern explanation F PDContent: the interior perimembranous with the high low pressure divider 7 that is plugged with the Sealing B8b that high low pressure is sealed is the boundary, is acting on head pressure P on the heart side therein d, on its outer circumferential side, acting on gas inhalating pressure P s, then to these pressure (P d, P s) multiply by its active area (S separately respectively P1, S P-S P1), both being added up is exactly power F again PD
On the other hand, F PVBe act on cold media air pressure on the face (downside among Fig. 2) of fixed scroll 1 one sides of pressure plate 11 make a concerted effort this power F PVWork as the power that pressure plate 11 is pushed away on axial upside.Modern explanation F PVMeat hold: the peripheral part with the 1d of cannular boss portion at the fixed scroll back side that is plugged with the Sealing A8a that high low pressure is sealed is the boundary, is acting on discharge gas pressure P therein on the heart side d, on its outer circumferential side, acting on gas inhalating pressure P s, with these pressure (P d, P s) multiply by its active area (SP separately respectively 2, S P-S P2), the value that both is added together is exactly F again PV
Conclude above explanation, on pressure plate 11, acting on the power F that pressure plate 11 is depressed to axial downside PDWith the power F that pressure plate 11 is pushed away on axial upside PV, in this embodiment, by the F that makes a concerted effort of these two power P=F PV-F PD=(P d-P s) (S P2-S P1), pressure plate 11 is pushed away on axial upside.Then, this power F pBe passed to support 3 by hinge pin 6.That is, support 3 is by pressure plate 11, with F p=(P d-P s) (S P2-S P1) power stretch upwards towards axial upside.
More than be the explanation that the pressure difference that acts on the cold media air on the pressure plate 11 and influence thereof are carried out, describe acting on the pressure difference of shaking the cold media air on the scroll 2 below.In Fig. 2, F ODBe act on cold media air pressure on tabular scrollwork tooth one side (upside among Fig. 2) of shaking scroll 2 make a concerted effort this F ODWork as shaking the power that scroll 2 depresses towards axial downside.Modern explanation F ODContent: to outer circumferential side, acting on discharge gas pressure P from the center of shaking scroll 2 respectively d, the intermediate pressure P in the compression process mAnd gas inhalating pressure P s, with these pressure (P s, P m, P s) multiply by its active area (S separately respectively 1, S 2, S 0-S 1-S 2), the value that they is added together is exactly F again OD
On the other hand, F OVBe act on cold media air pressure on framework one side (downside among Fig. 2) of shaking scroll 2 make a concerted effort this power F OVWork as will shake the power that scroll 2 pushes away on axial upside.The back side (downside among Fig. 2) of shaking scroll 2 is to suck gas atmosphere, so F OVUse gas inhalating pressure P sWith shake scroll 2 area of contour S in the axial direction 0Product represent.
Conclude above explanation, acting on the power F that it is depressed to axial downside on the scroll 2 respectively shaking ODWith with its power F that on axial upside, pushes away OV, by the F that makes a concerted effort of these two power 0=F OD-F OV=(P d-P s) S 1+ (P m-P s) S2, will shake scroll 2 and depress to axial downside.Then, this power F 0Be passed to framework 3 by the thrust surface 2d that shakes scroll 2.That is, framework 3 is by shaking scroll 2, with F 6=(P d-P s) S 1+ (P m-P s) S 2Power to pressing down.
, when stable running, shake scroll 2 and must press fixed scroll 1.That is, in this embodiment, on the framework 3 that moves vertically with shaking scroll 2 interlocks, must act on the composite force that on axial upside, pushes away.The power F that framework 3 is drawn on axial upside PWith the power F that framework 3 is depressed to axial downside 0Between relation must be F P＞F 0If, just shake that revolving of scroll 2 turn around in certain interval exist and become F P＜F 0The interval, in this interval, framework 3 and shake scroll 2 and leave from fixed scroll 1, at this moment, the leakage-gap between at the bottom of the tooth top of pressing chamber and the tooth becomes greatly, makes compressed action untenable.
On the other hand, if F PWith F 0Compare greater than essential value when above, slide with big pushing force at the bottom of not only making tooth top and tooth, and increase at the load that has only this part of the thrust surface 2d that shakes scroll 2, therefore, necessarily present the phenomenon that input is increased along with the increase of slippage loss, moreover, also worry can develop into burn and wait the most bad state of affairs.Therefore, the external diameter size of the 1d of cannular boss portion by adjusting the fixed scroll back side and the internal diameter size of high low pressure divider 7 make F p-F 0=(P d-P s) (S P2-S P1-S 1)-(P m-P S) S 2Under various operating conditions must be on the occasion of, and make it to be as far as possible little value, promptly realize optimized value.As these optimized means of supplementing out economy, can consider that the back side (upside among Fig. 1, Fig. 2) in fixed scroll 1 forms the intermediate pressure space.
The axial compliance of embodiments of the invention one when steady running more than has been described, fixed scroll 1 and the mechanism that turns round with little pushing force at the bottom of tooth top that shakes scroll 2 and the tooth when steady running promptly have been described.By above explanation, demonstrate this embodiment and also can realize and the identical desirable axial compliance of scroll compressor in the past.
Below with regard to Fig. 3 the characteristic of this embodiment in when starting is described.The scroll compressor that Fig. 3 illustrates this embodiment acts on pressure plate 11 and the situation of shaking the cold media air pressure vertically on the scroll 2 after starting just.
In Fig. 3, F PDBe act on cold media air pressure on the face of high low pressure divider one side (upside among Fig. 3) of pressure plate 11 make a concerted effort this power F PDWork as the power that pressure plate 11 is depressed to axial downside.Just after the starting, also do not rise, when considering simply, can take the P identical as with gas inhalating pressure owing to discharge gas pressure s(P d≈ P s).Therefore, F PDBe with gas inhalating pressure (P s) multiply by the product of pressure plate 11 area of contour in the axial direction.
On the other hand, F PVBe act on cold media air pressure on the face of fixed scroll one side (downside among Fig. 3) of pressure plate 11 make a concerted effort this power F PVWork as the power that pressure plate 11 is pushed away on axial upside.As previously mentioned, just after the starting, owing to think that discharging gas pressure does not also rise F PVBe with gas inhalating pressure P dMultiply by pressure plate 11 area of contour S in the axial direction pThe product of gained is with F PDWith value.
The following describes the power of shaking on the scroll 2 that acts on.In Fig. 3, F ODBe act on tabular scrollwork tooth one side (upside among Fig. 3) of shaking scroll 2 cold media air pressure make a concerted effort this power F ODWork as shaking the power that scroll 2 depresses to axial downside.As previously mentioned, after starting just, think that discharging gas pressure does not also rise.Modern explanation F at this moment ODContent: to outer circumferential side, acting on the discharge gas pressure P that does not rise as yet from the central part that shakes scroll 2 s, the intermediate pressure P in the compression process m, and gas inhalating pressure P s, with these pressure (P s, P m, P s) multiply by its active area (S separately 1, S 2, S 0-S 1-S 2), all adding them together again, the value of gained is exactly F OD
On the other hand, F OVBe act on cold media air pressure on framework one side (downside among Fig. 2) of shaking scroll 2 make a concerted effort this power F OVBe to work as will shake the power that scroll 2 pushes away on axial upside.The back side (downside among Fig. 3) of shaking scroll 2 is to suck gas atmosphere, therefore, and F OVUse gas inhalating pressure P sWith shake scroll 2 area of contour S in the axial direction 0Product represent.
So far explanation above the conclusion is because the power F that pressure plate 11 is depressed PDWith the pressure F that will push away on the pressure plate PVSize is identical and offset, and pressure plate 11 equals zero the power of drawing on the framework 3.On the other hand, act on the power of shaking on the scroll 2 with formula (2) expression, by this formula as can be known, power that scroll 2 depresses to axial downside is certain to become big, this power F with shaking O(=F OD-F OV) be kept to former state the power that framework 3 is depressed to axial downside.That is to say, after starting just, framework 3 with shake scroll 2 as shown in Figure 3, form the state that leaves from fixed scroll 1.And before this state and the starting, when promptly stopping, the steady state that forms owing to the deadweight of shaking scroll 2 and framework etc. is identical state.Then, after starting soon, when discharging gas pressure P dRise to a certain degree, shake scroll 2 and lift slowly, get off by in stable condition shown in Fig. 2 thereafter with framework 3.
F OD＝P s·S 0＋(P m－P s)·S 2＞P s·S 0＝F OV……(2)
From above explanation as can be known, in this embodiment's scroll compressor, at prestart, fixed scroll 1 and shake bigger gap is arranged between the scroll 2 vertically, promptly, with respect to the fixed scroll 1 that is fixedly supported upon on the seal container 10, shake scroll 2 and be in the position of leaving to axial downside.After starting, soon, be stable at this position relation.But thereafter,, shake scroll 2 and go up act, keep this steady state of little pushing force at the bottom of transferring to the tooth top of fixed scroll 1 finally and shaking the tooth of scroll 2 by hinge pin 6 along with pressure plate 11 pushes away on slowly in the axial direction.Therefore, as resulting in the scroll compressor in the past, as the fixed scroll 1 of major part, not ballistic motion up and down over and over again when starting.So can not make noise become big when starting, the hinge pin 6 of the axial compliance in the time of also can not using with the realization starting sustains damage.
Last in the explanation of present embodiment, explanation as a supplement describes the stability of framework 3.Modern feature to this embodiment illustrates straight from the shoulder.In the past, by making fixed scroll 1 with respect to shaking scroll 2, the i.e. framework of with respect to fixed bearing 3 structure of displacement in the axial direction only, compliance on having realized axially, that is to say, very close to each other in principle between at the bottom of tooth top and the tooth, and fixed scroll 1 is shaken scroll 2 with little contact force pushing.To this, in the present embodiment, shake the framework 3 of scroll 2 with respect to the mobile in the axial direction only structure of fixed scroll 1 that is fixedly supported upon on the seal container 10 by making crimping, compliance on the result can realize axially, that is to say, very close to each other in principle between at the bottom of tooth top and the tooth, and framework 3, promptly shake scroll 2 with little contact force pushing fixed scroll 1.At this moment, if act on moment unbalance on the hinge pin 6, say more closely that if hinge pin 6 becomes the mechanics structure of the effect that is subjected to direct moment, hinge pin 6 will be pried open, worrying can overslaugh framework 3 level and smooth displacement (follow up action) in the axial direction.
Illustrate the situation of the radial force on the scroll compressor that acts on this embodiment among Fig. 4.
F gBe to act on the load that shakes the cold media air on the scroll 2, its point of action position in the axial direction is positioned at the tooth depth middle part of tabular scrollwork tooth 2b.On the other hand, radially this shakes scroll 2 is the middle part of sliding bearing 2c in supporting (drivings of saying so woulds be better), on this position, and the cold media air F that loads gWith F S1(F S1=F g) pass to the 4a of pin portion of main shaft 4, shake scroll 2 and then be subjected to power F as its reaction force O1(F O1=F g).Here must be noted that shaking on the scroll 2 and acting on by F gAnd F O1The moment (couple) that produces.If F gPoint of action and F O1Point of action distance in the axial direction be made as L, then this moment is F gL.For make shake scroll 2 stably (not turning over ground) carry out swing movement, must make to act on the equalising torque of shaking on the scroll 2.Therefore, shake on the scroll 2 and above-mentioned tilting complex torque F gThe main trimming moment that L contends with draws by acting on thrust gas load that shakes on the scroll 2 and this form of moment that acts on the reaction thrust generation of shaking on the scroll 2 from framework 3.For this reason, above-mentioned tilting complex torque is with M F(M F=F gL) pass to framework (being the system that constitutes by framework 3 and pressure plate 11 strictly speaking).On the other hand, pass to the power F of the 4a of pin portion of main shaft 4 S1By the 1st bearing 3c with F F1Pass to framework 3.Herein, if will shake the middle part of bearing 2c and the middle part distance in the axial direction of the 1st bearing 3c is made as I 1, the distance at the middle part of the 2nd bearing 12a of the middle part of the 1st bearing 3c and the 2nd framework 12 is made as I 2, can derive formula (3) by the power relevant and the equilibrium relation of moment with main shaft 4:
F F1＝[(I 1＋I 2)/I 2]·F g…………(3)
Pass to the power F of framework 3 F1Fraising 1c by the fixed scroll 1 at axial tracking place bears by hinge pin 6, promptly with F F1The power F of identical size F2(F F2=F F1) bear as reaction force.If this power F F2Working position inappropriate, the stability (balance of moment) of framework 3 in order to keep himself will be born F F2Point of action, be the moment in the axial tracking place.This means that periphery is that the hinge pin 6 of reamer and the fraising 1c of fixed scroll 1 are pried open, and becomes the reason of the tracking action in the obstruction axially as previously described.Herein, with F F2Point of action ideal point the position as from the middle part of the 1st bearing 3c after the distance X of shaking scroll one side (upside Fig. 4) calculates, the equilibrium relation from the moment relevant with framework 3 can draw formula (4).
By being that the chimeric position of hinge pin 6 and the fraising 1c of fixed scroll 1 of reamer is arranged on the axial position that comprises by the position of formula (4) regulation with periphery, just can realize sleekly framework 3 axially on tracking move. M F ( = F 0 • L ) = F F 1 ( = I 1 + I 2 I 2 • F g ) • X
Figure A9419084400182
That is, the targeting part of hinge pin 6 preferably comprises the part of distance X.Embodiment 2
Embodiments of the invention two are described below with reference to the accompanying drawings.
Fig. 5 is the sectional view of major component that the situation of embodiment 2 when steady running of scroll compressor of the present invention is shown.
In the figure, the 1st, fixed scroll, its middle part is formed with exhaust port 1e.In addition, one-sided (downside among Fig. 5) at base plate 1a is formed with tabular scrollwork tooth 1b, subtend at the outer circumferential side of tabular scrollwork tooth 1b is formed with cross-head guide ditch 1g respectively, and the dewclaw 9a of cross headring 9 can be engaged in this guiding ditch 1g with radially being free to slide.In addition, be formed with in order to determine its protuberance 1f at the outer circumferential side of cross-head guide ditch 1g with respect to the position of the radial direction of framework 3 and sense of rotation.The 2nd, shake scroll, one-sided (upside among Fig. 5) of its base plate 2a is formed with the same in fact shape of tabular scrollwork tooth of fixed scroll 1 and has the tabular scrollwork tooth 2b of 180 ° of phase differences.In pairs be formed with the have an appointment cross-head guide ditch 2e of 90 ° of phase differences of cross-head guide ditch 1g with fixed scroll 1 to ground on the outer circumferential side of tabular scrollwork tooth 2b, the lower claw 9b of cross headring 9 can be engaged in this cross-head guide ditch 2e along radial direction with being free to slide.What scroll 2 was shaken in 13 supportings that are provided in a side of the downside that shakes scroll 2 shakes scroll rear support member (below abbreviate support member as).Be formed with 2 fraising 2h on the symmetrical position of the below of cross-head guide ditch 2e in order to the position of restriction radial direction of support member 13 and sense of rotation.In addition, in being formed with on the base plate 2a, produce the pressure intake 2g as the pressure introduction hole of certain pressure in order to gap at itself and support member 13.The central part of a side (downside in Fig. 5) opposite with shaking scroll 2 of support member 13 is formed with the boss part 13d of hollow cylindrical, and the inner side surface of this boss part 13d forms and shakes bearing 13c.In addition, on support member 13 and outer circumferential side boss part 13d the same side, be formed with the thrust surface 13b of thrust-bearing 3a planar slide that can relative framework 3.And, support member 13 with the outer circumferential side that shakes scroll 2 the same sides (upside among Fig. 5) on be formed with in order to determine itself and the fraising 13e of the position of radial direction that shakes scroll 2 and sense of rotation.Then, hinge pin 6 passes fraising 2h and fixedly is inserted in the fraising 13e, and the top of its hinge pin 6 is in the top of the tabular scrollwork tooth 2b that shakes scroll 2 to the more position near the top of the intermediate point that connects the bottom.
Shaking scroll 2 can move relative to support member 13 vertically, and device has Sealing A8a on the mating face of shaking scroll 2.Central part at framework 3 is formed with the 1st bearing 3c that is radially supporting by electric motor driven main shaft 4.Add the fraising 3d that on the outer circumferential side of framework 3, is formed with in order to the position of the radial direction of determining its relative fixed scroll 1 and sense of rotation, be embedded with protuberance 1f in order to the position of definite fixed scroll 1 at this fraising 3d.
The high low pressure dividing plate 14 and the base plate 1a of a side (upside in Fig. 1) opposite with tabular scrollwork tooth 1b base plate 1a fixed scroll 1 are close to, and are weldingly fixed on simultaneously on the seal container 10.
The following describes this action of embodiment two when steady running.High pressure refrigerant gas in the pressing chamber and middle pressure cold media air are introduced from the pressure intake 2g that shakes scroll 2 and are shaken in the base plate 2a and the gap between the support member 13 of scroll 2.Shake the power that scroll 2 utilizes the resulting predetermined axis of difference of axial force that is caused by this pressure and the axial force that is caused by the pressure in the pressing chamber to make progress, lead and push to fixed scroll by hinge pin 6.In addition, at this moment, shaking on the tabular scrollwork tooth 2b of scroll 2, though acting on the power that produces by radially cold media air, but, therefore do not have tilting complex torque to act on and shake on the scroll 2 owing on vertical intermediate point of the tabular scrollwork tooth of the point of action of this power, acting on reaction force from hinge pin 6.Thus,, shake scroll 2 and also press against on the fixed scroll 1, therefore shake scroll 2 and stably be pressed on the fixed scroll 1, can prevent prying open of hinge pin 6 with stable status even the setting of the pushing force axially is as far as possible little.
In addition, by making fixed scroll 1 and shaking scroll 2 resinifications,, cost is significantly reduced if only there is not the ejection formation of the highi degree of accuracy shape of machinery processing.Embodiment 3
Embodiments of the invention three are described below with reference to the accompanying drawings.Fig. 6 is the embodiment's three of the scroll compressor of the present invention sectional view of major component.
State when Fig. 6 illustrates steady running.In the figure, the 1st, fixed scroll is controlled the phase place of itself and support 15 by the hinge pin (not shown), and the peripheral part of base plate 1a is connected on the support 15 by the bolt (not shown).In addition, one-sided (downside among Fig. 6) at base plate 1a is formed with tabular scrollwork tooth 1b.
The 2nd, shake scroll, be formed with tabular scrollwork tooth 2b with the same in fact shape of tabular scrollwork tooth 1b of fixed scroll 1 at one-sided (upside among Fig. 6) of base plate 2a, and be formed with the boss part 2f of hollow cylindrical at the central part of the side (downside among Fig. 6) opposite of base plate 2a, be formed with at the inner side surface of this boss part 2f and shake bearing 2c with tabular scrollwork tooth 2b.In addition, the outer circumferential side that shakes scroll 2 with boss part 2f the same side be formed with can relative framework 3 thrust-bearing 3a make the thrust surface 2d of planar slide.In addition, be formed with cross-head guide ditch 2e respectively, in this cross-head guide ditch 2e, can meshing the dewclaw 9a of cross headring 9 with radially being free to slide in the subtend position of the outer circumferential side of the base plate 2a that shakes scroll 2.On the other hand, on framework 3, also being formed with to subtend a pair of and the cross-head guide ditch 2e that shakes scroll 2 has the cross-head guide ditch 3b of about 90 ° of phase differences, and the lower claw 9b of cross headring 9 can be engaged in this cross-head guide ditch 3b with radially being free to slide.In addition, the central part at framework 3 is formed with the 1st bearing 3c that is radially supporting by electric motor driven main shaft 4.
Be formed with voltage supply and go into the fraising 3g of hinge pin 17 on framework 3, and this hinge pin 17 is meshed with keyway 15e on being formed on support 15, control the phase place of framework 3 and support 15 thus, framework 3 is restricted with the sense of rotation of support 15.
The outer side surface hot charging of support 15 is separated into the inside of seal container 10 and sucks gas atmosphere 10c and discharge gas atmosphere 10d on seal container 10.In addition, the inner side surface of support 15 forms the barrel surface of two coaxial controls, promptly chimeric barrel surface C15a and chimeric barrel surface D15b, they respectively with coaxial two barrel surface that are formed on the outside of framework 3, promptly chimeric barrel surface C3d and chimeric barrel surface D3e are chimeric.In addition, the inner side surface of support 15 is formed with the circular groove of accommodating Sealing, and Sealing C16a and Sealing D16b are embedded in the sealing groove.Therefore, the space E 15c that surrounds by the outer side surface of the inner side surface of these two Sealing 16a and 16b, support 15 and framework 3, by be formed on the support 15 high pressure introduction hole 15d with discharge gas atmosphere 10d and be communicated with.
Be formed with the 4a of pin portion on the end of shaking scroll one side (upside among Fig. 6) of main shaft 4, the 4a of this pin portion has and the unidirectional planar surface portion of eccentric direction of shaking scroll 2, and this pin portion matches with the slider 5 that inner side surface has planar surface portion.In addition, the outer side surface of slider 5 is cylindrical shapes, cooperates with the bearing 2c that shakes that shakes scroll 2 free to rotately.10a is with the suction pipe in the importing of the low-pressure gas before the being compressed seal container, and 10b is with the discharge tube outside the discharge of the pressurized gas after the compression seal container 10.
The following describes the action of present embodiment.The action when action the during normal operation of relevant present embodiment three, starting and the stability of support etc., basically with embodiment one in identical, only its difference and feature part thereof are described here.
During steady running, discharging gas atmosphere 10d is high pressure, so the space E 15c that is connected by high pressure introduction hole 15d also becomes high pressure, framework 3 is at chimeric barrel surface C3d and led by support 15 in chimeric barrel surface D3e two places and float upward.Therefore, also float upward by the scroll 2 of shaking that thrust-bearing 3a is pressed against on the framework 3, its result, shake at the bottom of the tooth top, tooth of scroll 2 tooth with fixed scroll 1 at the bottom of, tooth top slides contiguously with little power.
In addition, after starting just, do not reach high pressure as yet owing to discharge gas atmosphere 10d, framework 3 is depressed downwards, shakes scroll 2 also along with depressing its result downwards, at the bottom of the tooth top of fixed scroll, the tooth and at the bottom of shaking the tooth of scroll, have the gap between the tooth top, can realize starting smoothly.
And, in the present embodiment,, also can adopt formation intermediate pressure space to replace forming high-pressure space E15c though example that high-pressure space E15c is used as making the means that framework 3 lifts upward describes to form below framework 3.At this moment, can consider the means of bleeder hole with the guiding intermediate pressure are set on the suitable position of the intermediate pressure of fixed scroll 1, and bleeder hole is set on the suitable position of the intermediate pressure that shakes scroll 2 with device by thrust-bearing guiding intermediate pressure.In addition, intermediate pressure also can be come out with the self-contained unit that high pressure and low pressure are mixed mutually by pressing chamber except the method for extracting out from the appropriate location of pressing chamber.Can consider in addition to utilize high pressure and intermediate pressure the two, in addition, it is also conceivable that the elastic force of utilizing spring etc.
In addition, in the present embodiment, be to illustrate cross headring 9 is plugged on the example that shakes between scroll 2 and the framework 3, shake between scroll and the support 15 or shake between scroll and the fixed scroll but also cross headring 9 can be plugged on.
In addition, in the present embodiment, illustrate with the separated example of discharge gas atmosphere 10d will suck gas atmosphere 10c by support 15, but, not necessarily need seal container 10 inside are separated up and down, can consider to make all to be to suck gas atmosphere or all to be the situation of discharging gas atmosphere.At this moment, all be when sucking the situation of gas atmosphere, with pipe etc. exhaust port 1e directly is connected with discharge tube 10b, and when all being the situation of discharge gas atmosphere, then suction pipe 10a directly is connected with pressing chamber.
In addition, under the situation of present embodiment, to the framework 3 of the doing axial tracking motion part that leads, the span of promptly chimeric barrel surface C15a and chimeric barrel surface D15b is very long, and therefore, the stability of the framework of the member that moves as axial tracking is very good.
Practicality on the industry
Adopt screw compressor of the present invention, when steady running, can realize the vortex with the past The same desirable axial compliance of compressor, namely, frequent at the bottom of the tooth top of tabular scrollwork tooth and the tooth Slide with little contact force, simultaneously, at when starting abnormal noise not, and shake Scroll can be slick and sly mobile, thereby the available energy is high, noise is low and the high scroll compression of reliability The contracting machine.

Claims (3)

1. a scroll compressor is characterized in that it comprises: seal container; This seal container is divided into the high low pressure divider of hyperbaric chamber and low pressure chamber; Be located at the fixed scroll in the described low pressure chamber and shake scroll, its tabular scrollwork tooth separately is meshing with each other to form pressing chamber each other at it; Support the framework that this shakes scroll and ground free to rotate supporting spindle vertically; Limit described fixed scroll and described framework radially with sense of rotation on the connecting body of relative position; The pressure plate that is located between described high low pressure divider and the described fixed scroll, is meshed with high low pressure divider and fixed scroll respectively; Described fixed scroll is fixedly supported upon in the described seal container, simultaneously, described connecting body runs through described fixed scroll and the same direction of described framework and described pressure plate ground is connected, and described framework can relative vertically described fixed scroll be shifted with described pressure plate.
2. a scroll compressor is characterized in that it comprises: seal container; Be located at the fixed scroll in this seal container and shake scroll, its tabular scrollwork tooth separately is meshing with each other to form pressing chamber each other at it; Support this vertically and shake the scroll and the framework of supporting spindle radially; Be located at the described tabular scrollwork tooth that shakes scroll an opposite side shake scroll rear support member; The connecting body that shakes on the scroll described in embedding when end and this shook the set of scroll rear support member; The described scroll of shaking is by shaking scroll rear support member and press to described fixed scroll from being formed on the gas pressure in the described pressing chamber that the pressure introduction hole that shakes on the scroll imports, leaving.
3. a scroll compressor is characterized in that it comprises: seal container; Be located at the fixed scroll in this seal container and shake scroll, its tabular scrollwork tooth separately is meshing with each other to form pressing chamber each other at it; Support this vertically and shake the scroll and the framework of supporting spindle radially; Be located at the support on the seal container of anchoring between this framework and the described seal container; Described framework relies on described support, presses to described fixed scroll side vertically and moves with restricted state diametrically.
CN94190844A 1993-11-05 1994-11-04 Scroll compressor Expired - Fee Related CN1042969C (en)

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CN1104564C (en) * 1998-11-20 2003-04-02 三菱电机株式会社 Vortex compressor
CN103541770A (en) * 2012-07-10 2014-01-29 株式会社丰田自动织机 Scroll expander

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WO1997044585A1 (en) * 1996-05-21 1997-11-27 Bitzer Kühlmaschinenbau Gmbh Spiral compressor
JP2000352386A (en) * 1999-06-08 2000-12-19 Mitsubishi Heavy Ind Ltd Scroll compressor
JP2002221166A (en) 2001-01-29 2002-08-09 Mitsubishi Electric Corp Scroll compressor
JP4578052B2 (en) * 2001-01-31 2010-11-10 三菱電機株式会社 Scroll compressor
JP3982238B2 (en) 2001-11-08 2007-09-26 三菱電機株式会社 Compressor
JP4837331B2 (en) 2005-08-11 2011-12-14 三菱電機株式会社 Scroll fluid machine positioning method and apparatus, and scroll fluid machine assembly method and apparatus
US7959421B2 (en) * 2007-09-11 2011-06-14 Emerson Climate Technologies, Inc. Compressor having a shutdown valve

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CN1104564C (en) * 1998-11-20 2003-04-02 三菱电机株式会社 Vortex compressor
CN103541770A (en) * 2012-07-10 2014-01-29 株式会社丰田自动织机 Scroll expander

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